2003 Jan 27

18

Philips Semiconductors

Product specification

8-bit A/D and D/A converter

PCF8591

handbook, halfpage

23

4

6

200

150

50

0

100

5

MBL835

VDD (V)

IDD

(

µA)

handbook, halfpage

23

4

6

160

120

40

0

80

5

MBL836

VDD (V)

IDD

(

µA)

−40 °c

+27 °c

+85 °c

Fig.18 Operating supply current as a function of supply voltage (analog output disabled).

b. External oscillator.

handbook, halfpage

500

00

02

04

06

08

0A

0

100

200

300

400

MBL837

hex input code

D/A output

impedance (

Ω)

handbook, halfpage

500

BO

CO

DO

EO

FO

FF

0

100

200

300

400

MBL838

hex input code

D/A output

impedance (

Ω)

Fig.19 Output impedance of analog output buffer (near power rails).

a. Output impedance near negative power rail;

b. Output impedance near positive power rail;

The x-axis represents the hex input-code equivalent of the output voltage.